Lathe.



` Patented my la, |899'.

F. C. HUSE.

' LATHE. l 'Application filed Jan. 3, 1899.)

2 Sheets-Sheet I.

No Model.)

n HIHIIIIIHIIHIIH' No. 629,256. *Patntd my la, 1899;

F. c. Husla.y

LATHE. A

V (Application filed Ian. 3, 1899.) v (No Medel.)V v 2 Sheets-Smet 2.

I predetermined distances to turn a number of s described, andparticularly pointed out inthe I forming apart of this specication,whereinfFig. 2,*and Fig. A5 -is asimilar view on the line 5 5 of thesame figure.,

PATENT rricn.

.' Fanno. Huss, oFcARREBAssETT, MAINE.

LATH E'.

SPECIFIGATQN forming part o'f Ietters apaisant tied Jaimy s, i899.

To all whom it mag/concern:

Beit known thatl, FRED. C. HUSE, a citizen of the United States,residing at Carrebassett, in the county of Franklin and State of Maine,have invented new and useful Improvements in Lathes, of Whichthefollowing is a lspecilication. i

This invention relates to wood -turning lathes, and has for its object,first, to provide novel mechanism for feeding the carriage carrying thework step by step at accuratelyarticles from the same piece of stock;second, to provide novelmechanism to cut od the iinished articles one byone from the stock as they are turned, and, lastly, to improveandsimplify the construction and render more efficient and accurate theoperation of this class of machines generally.

To these ends my invention consists in the features and in the novelconstruction, combination, and arrangement of parts hereinafter claimsfollowing the description, reference' being had to theaccompanyingdrawings,

Figure lis a vertical longitudinal sectional View of my improved lathe.Fig. 2 isa to'p plan'view thereof. Fig. 3 is a detail view of themechanism .for arresting the forward movement of the carriage. Fig. 4 isa trans-` verse sectionalviewtaken on the line 4 4 of Referring to thedrawings,the numeral l indicates the frame ofthe lathe, and 2'theslidingcarriage traveling upon tracks or ways 3, all constructed, in anordinary or any approved manner. The carriage 2 is provided! with usualand well-known means (notvshown) for rotatably holding the Work or stockto be'V turned,and any suitable type o fturning-knife or tool (also notshown) is provided and properly arranged to turn the articles from thestock. p l ,Y

Y Amranged'to freely reciprocate in suitable bearings at one side of theframe is a rackbar 4, the teeth 5 of which arearranged on the upper side0f the bar, and -the distance between each two adjacentteethisegual tothe lengthjof the article to bet-urncd. As

Patent 110.629,25, aerea any 1s, gees.

Serial No. 701,014. (No model.) v

A shown, Athe abrupt sides ofk the teethface in thel direction in whichtbe'carriage travels and are adapted to be successively engaged by ap'awl 7, fixed on a shaft 8, rotatably mounted in and Atransversely tothe carriage 2. Fixed to the side of the frame 1 is a rackbar 9, similarin size and shape to the rackbar 4, but having its teeth arrangedreversely to the teeth of said rack-bar 4, and arranged to successivelyengage the teeth of the rackbar 9 is a pawl 10, iixed on a shaft l-l,mounted l transversely in the carriage 2.

and 11 are provided with spools or pulleys 12 andl, about which is wounda cord or strap 14, and oneof said shafts, as 8, is provided with ahandle 15, by means of which the shaftjs rotated to lift the pawl 7outof engagement with the rack-bar` 4. When `the shaft 8 is thus rotatedto lift the pawl 7, the cord or strap 14 `rotates the shaft 1l and alsolifts the pawl 10 out of engagement with the The shafts ,8-

rack-bar 9. Arranged adjacent to and parallel with the rack-bar 9' is alifter-bar 16.V

through which passpins orprojections 18,that

are fixed in the sides of the frame 1." ltwill be evident that when thelifter-bar is moved rearwardly on the pins 18 it willbe raised, and,engaging the end of the pawl 10, willx raise the latter out ofengagement-with the rackbar 9 to permit the carriage to he fed forward,as will. more fully hereinafter be explained. Attached to the rack-barLtis oneend of a contractile spring 19, theother end ofwhich is attachedto the rear end of the Aframe 1 or to any othern suitable iixed support.The spring v19 operates to retract or draw the rack# bar 4 toward therear end of thevframe, and said bar is moved in the reverse direction tofeed thecarriage forward in the manner and -by the means which I willnow describe.

Journaled in suitable bearings in the frame lis a longitudinal shaft200n one end of which is fixed a driving-pulley 21, which may be drivenfrom any suitable source of power.

On the opposite end of said shaft is fixed On the periphery of thecylcam-cylinder 22. n inder A22 is formed a cam 23, which from the ICOor lies in a plane at a right angle to the axis of the cam-cylinder.Between the end 26 of the straight portion of the cam and thecommencement 24 of the inclined portion thereof is formed an abruptshoulder 27, the face of which is parallel with the axis of thecamcylinder. On the forward end of the rackbar 4 is a fixed pin orprojection 28, that engages the face of the cam and is held inengagement therewith by the spring 19. J ournaled in bearings in theside'of the frame is a transverse rock-shaft 29, provided at one endwith acrank-arm 30, and to the free end of said crank-arm is fixed oneend of a link or connecting-rod 3l, the other end of which l' vfuredaspring-actuated drum 35, that oper` ates to` turn the. rock-shaftconstantly-in a direction to throw the crank-arm 30 toward the saw, andthus move the lifter-bar in the same` direction and to also throw thecam-arm 33 toward the cam-cylinder; Y

Ther ope-ration of this part of the invention is as follows: The stockfrom which the articles are to be turned is fixed in position onthecarriage 2, in proper position to be engaged by theusualrough-ing-dies and turning-tool.y (Not shown.) Now let it be assumedthat the pin or projection 28v on the end of the, rack-bar4 is restingon the cam in rear of the shoulder-27 and that the shaft 20- and thecam-cylinder 22v are rotating in the direction shown by the arrow. Thentheinclined portion 24 25 of the cam will engage the pin or projection28a-nd will draw the rack-bar 4 for'- ward. The pawl 7 being inengagement with one-of thefteeth of said rack-bar, the carriage willmove forward with the rack-bar thedistance of one tooth at each rotationof the cam,

thus feeding the stock to the turning knife or too-l, which operates toturn ,the article fromV the stock. A-s the pin or projection 23 comesintof engagement with the straight portion 25.26'of the cam,therack-bar4, and with it the carriage, remains stationary for thepurpose hereinafter described, and when the shoulder 27 passes the pinor projection the rack-bar willbev instantly retracted by its spring 19into position to causeanother tooth toengage the pawl Z and feed thecarriage forward another step, the carriage being th-usfed lforwardstepby step by theteeth of the rackbar, a` complete article being turnedout at each step,-the distance between the teeth th-usdetermining thelength of the articles turned. During that part of the operation inywhich the pin or projection 28 is. riding over` the inclined portion ofthe cam, or as the. rack-bar 4 isy being moved forward, the

pinor projection 32 on the end of the camcylinder is bearing against theforward faceof the cam-'arm 34 and is pressing the latter rearwardagainst the tension of the springdrum. Hence the crank arm 30 will bethrown toward the right, holding the lifterbar16 elevated, and thusholding the pawl 10 out of engagement with the iiXed rack-bar 9, therebypermitting the carriage to feed forward. Before the pin or projection28, however, moves off from the inclined portion of the cam, the pin orprojection 22 will pass ffrom in front of the cam-arm 34, and thespring-drum will immediately rock the rockshaft to throwthe crank-arm 30to thepleft, thus drawing forward and loweringl the lifterbar andpermitting the pawl 10 to engage one of the teeth on the fixed rack-bar9. The movement of the carriage is by these means accurately controlled,the pawl 10 and fixed rack-bar preventing thecarriage from being movedforward any farther than the exact distanceit is moved by the rack-bar4. Before the cam operates to' move the rack-bar forward the inc-lined`cam 34 of the cam-arm is engaged bythe pin or projection 32, whichoperates to rock the rock-shaft and again raise the lifter-bar and liftthe pawl l0 out of engagement with the rack-bar 9 in readiness for thenext forward movement of the carriage.

At the completi-'on of' each article-that is to say, as each article istnrned*the cutting- .off mechanism is automatically thrown intooperation to cut off theiinishedarticle,which I will now describe.

Fixed to the side of the frame 1 is a U- shaped bracket 36, in which isjournaled a shaft 37', and on saidshaftis rigidlyfixed the lower end of'a relatively broad arm38-,which `is forked or bifurcated at its upperlend to form two bearings 39. In thel bearings 39ris journaled asaw-ar-bor 40, on one end of which is fixedl a circular saw 41, and onsaid arbor, between the-bearings 39, is fixed adrive-pulley 42, whichmay be driven by any suitable source of power. On one endet' the shaft37 is fixed an arm` 43, which at itsv lower endis attached to one end-ofa contractile spring 44, the other end of said spring being ati tachedto the` frame l. The opposite or upper end of the arm 4,3 is bentlaterally at a right angle, as shown, and has fitted` therein aset-screw 45, the inner-end of which takes into the arm 3S'. On theshaft 20, adjacent to the arm 43, is ii-xeda. cam 46, which, at acertain period during each rotation of the f shaft 20, engages and ridesover a pin or projection 47 on thel arm 43- and rocks the shaft 37 thusthrowingthe saw i-n against the work and cuttin-goif theturned article.The cam 46 isv soarra-nged on the shaft 2O that when the pin orprojection 2S'on the rack-barien'- IOO IIO

gages the straight portion of the cam-cylinder, or, in' other words,when the carriage has fed the stock forward one step andis at rest, thecam46' engages the pin o-r projection on the arm 43 and moves the sawforward to cut oif the-article just turned. g. By arranging thesaw-arbor in the double bearings as described and mounting the pulsharpening.

ley between said bearings the saw will at all times rotate at a trueright an gie to the turned articles and cut o the latter squarely.

By means of the set-screwe the throw or movement of the saw may beregulated t'o suit the thickness or diameter of the articles be-V ingturned, and the saw may also be adjustedV up to its work to compensatefor the diminished diameter It will of course be understoodthat thearticles are successfully turned and cut od from" the stock and that thelatter is fedforward the distance of one` tooth of the rack-bar to eacharticle. By removing the rack-bars and substituting others in which theteeth arearranged at dilferent distances apart articles of at the endfofeach forward mov` dierent lengths maybe turned.

Having described my invention, what 1. In a lathe, the combination withthe frame and the carriage traveling thereon, of a reciprocatingrack-bar, a pawl carried by the carriage in engagement with the rack-barfor imparting a step-by-step movement to the carriage, a fixed rackebarhaving its teeth arranged reversely to the teeth on the reciprocatingrack-bar, a pawl carried by the carriage and arranged to engage'thefixed rackbar and arrestthe movement of the carriage d ement of thereciprocating rack-bar, and means for automatically and alternatelyraising and lowering said pawl into and out of engagement with the fixedrack-bar at the opposite extremesof` the movement ofthe reciprocatingrack-bar, substantially as described.

2. Ina lathe, the `combination with the; frame and-the carriagetravelingthereon,vof

a reciprocatingrack-bar, a pawl carried by the carriagein engagementwithptherackv' bar,means form'oving saidrack-bar forward l yintermittingly to imparta step-by-step move ment to the carriage, la'

l teetharranged revers'ely to the teeth on the spring said rack-.hampafixed rack-bar having 'its Y reciprocating rack-bar, a pawl carriedbythe carriage and arranged to engage the fixed rack-bar and arrest themovemeut'cf the car riage at the end of each forward movement V of thereciprocating rack-bar, and means for automatically raising said pawloutof engagement with the fixed rack-bar at the initial 'baimeans formoving said portion of each forward movement of thereciprocatingrack-bar, ,substantially as de-v scribed. s

3. In a lathe, the combination with the frame and the carriage travelingthereon, of a reciprocating rack-bar, 'a y pawl carried by the carriagein engagement with the rackrack-bar forward of the saw resulting from-Ariage, a spring for retracting heisses.

vof the reciprocating rack-bar, a lifter-bar having rearwardly andupwardly inclined slots;V fixed pins or projections passing through saidslots, and means for reciprocating said lifter-bar to automaticallyraise the pawl out I of engagement with the fixed rack-bar at theinitial portion of each forward movement of the reciprocating rack-bar,substantially as described.

4. In a lathe', the combination with the lframe and the carriagetraveling thereon, of

a reciprocating rack-bar7 a pawl carried by the carriage in engagementwith the rack-bar, a pin or projection on the rack-bar, a rotary camarranged to engage said pin or projection and move said rack-bar forwardthe distance of one topth at each rotation of the cam to impart astep-by-step movement to the carfor retracting the rack-bar, and meansactuated by y matically arrestingthe movement of the c ar riage atV thecompletion of each forward movemen-t of the rack-bar, substantially asdescribed.

5.111 a, lahaine combination with nie yframe and the carriage travelingthereon,'of

a reciprocating rack-bar, a pawl. carried by the carriage in engagementwith the rack-bar, apin or projection onthe rack-bar, a rotary camarranged to engage said pin or projection and move the rack-bar forwardintermittingly to impart a step-by-step movementto the' carriage', aspring for retractin g the rackbar, a fixed rack-har at one sideofthezframe, a pawl carried by the carriage Varranged* to engage` the ixedrack-bar, a lifter-bar lpro# vided with inclined slots, fixed pins orprojectionspassing through said slots,a rockshaft, acrankfarm on saidshaft, a link atsaidfcam for autof lllOO tached at one end to saidcrank-arm and at its other end to the `lifterbar,a camV on therock-shaft and a projection onthe said rotary cam arranged to engage'the cam'onthe rockyshaft and rockthe latter bar and hold the pawl outof engagement with the fixed rack-bar, substantially as described.

In testimony` whereof I have hereunto set myhandsin presencel of FRED C.l-IUSE;

Witnesses: 1 rSars E. BEEDY,

ENo'cH 0; GREENLEAF.

to raise the liftertwo subscribing witl

